The unique architectural style of Inner-Erzsébetváros was shaped not only by the numerous courtyards resulting from Jewish religious traditions but also by its former industries. Almost every building's rear section housed some sort of family business or a factory employing 100-150 people. Most factories operated on Kazinczy Street.

At Kazinczy Street 53, Ignác Goldstein's chandelier and wall sconce factory was located. The two-story residential building and factory, inaugurated in 1886, were demolished in 1957. Today, it is also gone, but at number 52, Vilmos Földes' shoe factory once operated. After the 1948 nationalization, the communist state power continued to operate the factory as a shoe leather waste processing plant.

At the former number 50, a small-capacity perfume factory operated from 1867. In 1881, the bread factory that was later bought by flour merchant Gyula Band in 1916 was built on the site of Jónás Eisler and Miksa Jónás' fragrance workshop. The Band's bread, biscuit, and baby food factory, along with the tenement house, were demolished in 2012.

At the former number 48, on the street front of the "L"-shaped plot, a tenement house with 10 apartments built by lawyer Károly Pászthory was inaugurated in 1883. In 1908, Manó Schmolka, a butcher, bought the property from him to establish his salami factory's smokehouse here. After nationalization, the factory was operated by the State Meat Processing Company and later by Délhús Rt. until its demolition in 2011.

The two-story house at number 41 was purchased in 1898 by architect Adolf Heuffel, who had undeniable merits in the construction of the Elisabeth Bridge and the Comedy Theatre. In 1900, he allowed orthodox Jewish butcher Izidor Rebenwurzl to operate a butcher shop on the ground floor, followed by a kosher slaughterhouse and a canning factory. Since the kosher meat processing plant operated under the community's supervision until 2002, it was never nationalized.The building currently operates as a restaurant under the name "Kőleves," where Jewish dishes and historical relics from the era can be found.

From 1919, Budapest's most famous orthodox Jewish printing house operated at the Kazinczy-Dob Street intersection. The factory founded by Rabbi Dávid Cvi Katzburg was best known for the country's first Hebrew-language periodicals, the rabbinic journal Tél Tálpijot and the Talmudic children's magazine Nité Bachurim. The Nazis shut down the printing house in 1944.

Opposite the printing house operated Lipót Skrek's butcher shop, behind which a five-story tenement building was handed over in 1930. On its ground floor, an orthodox Jewish sausage, canning, and salami factory also began operations. The factory, combined with a residential building designed by Dezső Burger, was the district's 12th kosher meat factory. This food factory was one of the 11 kitchens in the ghetto established in 1944. The factory was demolished in 2006.

Further down the street, the Erzsébetváros Tobacco Factory, Sándor Héber's stove factory (SZIMPLA KERT currently), and Kázmér Kölber's coach and carriage factory, founded in 1780, operated.